(chīn) noun
1. The spine, backbone, or back.
2. A piece of meat from the back.
3. A ridge.
—v.t. chined, chin·ing
1. To cut through the backbone of; cut into chines.
2. To cut up. [<OF eschine backbone <Gmc.]

(chīn)
See CHIME².

(chīn) noun Geog.
A deep or narrow ravine or fissure. [OE cinu]